baber/WOPTO huggingface dataset:
Patent GB-382366-A (GB)
Title: Improvements in or relating to a process and apparatus for precipitating and separating alumina hydrate from solutions of alkali metal aluminates
IPC: C01F7/147
Filed: 1931-09-04
Abstract: <PICT:0382366/III/1> Hydrated alumina is separated from an alkali metal aluminate solution by supplying the solution to a tank and causing an upward flow of liquid through the solution whereby the particles precipitated are prevented from settling until they attain a certain size; the settled particles are removed from the bottom of the tank.  In the apparatus shown, the solution is fed to the first of a series of closed precipitation tanks 1, 2, 3.  The upward current of fluid in tank 1 is effected by pumping air or solution or both, depending on the adjustment of valves 8, 10, downwardly through pipe 11.  Each of the other tanks is provided with a similar arrangement.  Solution overflows from one tank to the next through pipes 12, 12a.  According to one method of operation, the solution containing a large quantity of well developed particles passes from the bottom of each precipitating tank through valves 18, 19, 20 to the settling tank 17.  The precipitate is withdrawn from this tank for filtering or calcination through pipe 29.  Solution containing seed particles in suspension may be returned to any or all of the precipitation tanks through pipe 21.  According to another method of operation, valves 18, 19 are closed and valves 33, 35 are opened, whereby the liquid containing a large number of suspended particles is passed successively through the tanks 1, 2, 3.  The rate of flow of the fluid up through each tank may be greater than in the preceding tank whereby the size of the settling particles progressively increases.  The precipitation tanks may be heated or cooled by coils.
Patent GB-839292-A (GB)
Title: Improved rotary power transmission shaft
IPC: F16F15/02
Filed: 1958-08-05
Abstract: 839,292. Flexible shafts; shaft couplings. GENERAL MOTORS CORPORATION. Aug. 5, 1958 [Aug. 5, 1957], No. 25026/58. Class 80 (2). [Also in Group XXXI] A flexible shaft which is straight when in unstressed condition is held bowed between a pair of spaced supports at its ends, the axes of the supports being out of alignment in at least one plane. As shown, the propeller shaft 20, Fig. 2, of a motor vehicle, connecting the engine 2 to the rear road wheels 8, is held bowed by supports 22, 4 at its two ends which are out of alignment. The engine 2 is mounted at three points 3, Fig. 1, on the vehicle chassis 1, and comprises a support 22 within which is a shaft coupling connecting the propeller shaft 20 to the engine crankshaft 26. The rear end of the propeller shaft 20 is connected through a coupling allowing axial movement to a changeratio gear 4 integral with a differential, driving through universal joints 7 and floating halfshafts 6 to the rear road wheels 8. The engine crank-shaft 26, Fig. 3, is formed with a flange 28 to which is secured by bolts 34 a coupling sleeve 30 having internal splines engaging splines 36 on the end of the propeller shaft 20, a nut 40 on a threaded end 42 of the propeller shaft holding the coupling sleeve 30 thereon and forcing it on to a frusto-conical section 38. The rear end of the propeller shaft 20, Fig. 4, has splines 46 in axial sliding engagement with internal splines in a sleeve 44 fast with the input shaft of the change-ratio gear and carried by the gear housing 4, a seal 48 retaining lubricant within the gearing. In a modification, Fig. 5 (not shown), a flexible propeller shaft is held bowed between a conventionally-arranged motor vehicle changespeed gear and a rear road wheel differential. In another modification, a motor vehicle engine E, Fig. 11, has its axis parallel to but out of alignment with a transmission unit T. In a further modification, the vehicle engine E, Fig. 12, is connected through a flexible propeller shaft 20 to a universal joint U, a change-ratio transmission T and a differential unit D. The flexible propeller shaft 20 is mounted in a rigid, non-rotating tube 50 which maintains it in its bowed condition. In another, similar, modification, Fig. 13 (not shown), the rigid tube 50 is omitted, and the ends of the flexible propeller shaft 20 are supported in non-aligned mounts.
Patent GB-979198-A (GB)
Title: Well apparatus
IPC: E03B5/00
Filed: 1963-06-24
Abstract: 979,198. Wells &c. W. H. HINE. June 24, 1963, No. 25088/63. Heading E1F. [Also in Divisions F1 and Gl] An apparatus for raising, quickly restoring and maintaining water in an underground well at a level above the level of the contiguous water table T, comprises means 12, 13 for closing and sealing the upper end of a well casing, motor driven vacuum pump means 20, 21 for evacuating and reducing the pressure of air in the casing below atmospheric pressure, whereby atmospheric pressure acting on the water table causes water entering the well casing to rise above the level of the water table T, and switch means 26 responsive to reduced pressure in the casing and operably connected to the motor 21 of the vacuum pump 20 for operating it to maintain the reduced pressure in the casing within predetermined limits. The switch means 26 is a diaphragm switch biased to its closed position by a spring disc and opened when the pressure within the casing falls to a predetermined value. The switch may be operated manually through a knob 34. A manually operable pressure equalising valve 35 is provided to restore the pressure in casing to atmospheric pressure prior to removal of the top cover 12 secured by bolts 14. In deep wells the delivery through the outlet pipe 15 may be assisted by a jet 17 supplied with water through a pipe 16. In an alternative embodiment, Fig. 5 (not shown), the vacuum pump, motor, switch and pressure equalising valve are remote from the well.
Patent GB-353732-A (GB)
Title: Improvements in or relating to electrical protective relay systems
IPC: H02H1/04
Filed: 1930-08-22
Abstract: 353,732. Protective cut-out arrangements. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London.-(Assignees of Crichton, L. N.; 61, South Munn Avenue, East Orange, New Jersey, U.S.A.) Aug. 22, 1930, No. 25168. Convention date, Aug. 26, 1929. [Class 38 (v).] To prevent tripping of a circuit-breaker 31 owing to the unidirectional current component superposed on the steady fault current when an asymmetric fault occurs in a line 29 supplying a load 30, which may be a traction system, the current actuating winding 34 of an impedance relay 33, such as described in Specification 103,947, [Class 38 (v), Electric switches &c.], is shunted by an arrangement of resistance 40 and reactance 41 preferably approximating in value to those of the line 29. The shunt byepasses the unidirectional component, leaving the steady fault current to actuate the relay 33, which is therefore responsive to the true impedance and does not operate with an apparently low impedance due to a fault, say, in a neighbouring section. The voltage coil 36 of the relay is fed from a transformer 37, but the invention is stated to be applicable also to overcurrent relays.
Patent GB-807930-A (GB)
Title: Improvements in or relating to electric pulse modulating arrangements
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H03K7/00
Filed: 1956-08-17
Abstract: 807,930. Radio pulse signalling. STANDARD TELEPHONES & CABLES Ltd. Aug. 17, 1956, No. 25220/56. Class 40 (5). Wave pulses whose frequency varies progressively from leading to trailing edge of the pulse are passed through a dispersive means introducing a delay dependent on frequency so that the pulse durations are shortened or lengthened and their amplitudes correspondingly increased or decreased. Trapezoidal pulses (Fig. 2A) may frequency modulate a backward wave oscillator to produce the wave pulses (Fig. 2B) which are then passed through a dispersive device such as a rectangular waveguide with cut-off frequency near the pulse carrier frequency, or a travelling- wave tube amplifier, or a filter network of lumped reactances. The modulating pulses may be a pulse code signal. Reducing the pulse width permits the insertion of further shortened wave pulses between each pair of wave pulses, for multiplexing signals fed by a distributer to a common antenna.
Patent GB-1495052-A (GB)
Title: Machine for the continuous winding of wire on reels
IPC: B21C47/12
Filed: 1975-06-13
Abstract: 1495052 Continuous winding of wire TECHNOFIL SpA 13 June 1975 [17 June 1974] 25296/75 Heading D1J A wire winding machine comprises two side-by-side wind-up reels; a first arm 22 pivotable in a plane normal to the axes of the reels and carrying a traversing guide 25, this first arm 22 being movable from one extreme setting (shown in full lines) to another (shown in broken lines) to transfer the wire 50 from a full reel to an empty reel: a second pivotable arm 28 carrying at least one idler pulley 29, 30 over which the wire 50 passes before passing over the traverse means 25 on the first arm 22, said second arm 28 having a pivotable motion dependent upon that of the first arm 22; and body 35 between the two reels movable from a retracted setting into a projected setting in which as the first and second arms move from one extreme setting to the other the body 35 pushes the wire extending between the reels into a plane in which it is snagged by grippers on an entraining disc 7 associated with the empty reel.  The interelated movement of the pulleys 25, 29 as the arms 22 and 28 move from one extreme setting to the other is to keep the feed of the wire 50 supplying the machine practically constant. In Fig. 6 the arm 22 is rocked about a pivot 21 by a piston and cylinder unit 52. A pivotal movement of the arm 22 is transmitted to the arm 28 by a belt 83. In Fig. 5 (not shown) the belt 83 is replaced by a link work. In Fig. 1 (not shown) the arm 28 is carried by the arm 22, the two arms being locked together so as to move as one about the pivot 21. The body 35 includes arcuate surfaces as shown so that as the body 35 moves towards the viewer to cause a wire being transferred from a full reel to an empty reel to be snagged by grippers on an entraining disc 7 of the empty reel, the wire that is then wound up on the empty reel is protected from the so called "whip" of the cut end of the wire on the completed reel. Traverse of pulley 25. The traverse means 25 is reciprocated parallel to the axes of the reels by a hydraulically operated piston (23), Fig. 3 (not shown) in a cylinder (26). Two hydraulic pumps (31) are connected to an electronic control circuit and control in turn the supply to the cylinder (26) to reciprocate the pulley 25 at a speed which is proportional to the speed of the rotation of the reels and a function of the desired winding up pitch: the length of the traverse stroke being set by means of adjustable contact elements (26a) and (26b) mounted on micrometric screws (31a) and (31b). Preventing the wire from being cut by the empty reel. As the wire 50 is being transferred from a full reel to an empty reel a vertical rod (40). Figs. 2 and 3 (not shown) that is positioned between the reels adjacent the ends thereof where the entraining discs 7 are mounted, is moved from a position near the empty reel to a position near the full reel to prevent the grippefs on the entraining disc 7 of the full reel from cutting the wire. This ensures that the wire is caught by the entrainment means associated with the empty reel.
Patent GB-379526-A (GB)
Title: New or improved shoe-stand
IPC: A47F7/08
Filed: 1931-09-09
Abstract: 379,526. Stands. RAVENEL, A.; 347, Rue St.-Martin, Paris. Sept. 9, 1931, No. 25313. Convention date, Sept. 17, 1930. [Class 52 (v).] A shoe stand consists of a glass &c. plate supported in a vertical plane by a base member, the upper edge of the plate being inclined and provided with one or more bearing plates to support the shoe. In the construction shown a semicircular glass plate 1 is adjustably held between the lugs 4 of a base member 2 and the upper edge 1a is provided with clip on bearing plates 6, 7 for the heel and sole of the shoe. The heel plate 6 has an upstanding lug 6a to prevent the shoe slipping. The plate 6 may be dispensed with, the heel resting on a notch formed in the plate. The bearing plates 6, 7 may be cast with the plate 1.
Patent GB-1067324-A (GB)
Title: Vacuum induction furnace
IPC: C21C5/52
Filed: 1964-06-19
Abstract: 1,067,324. Vacuum induction melting furnaces. O. JUNKER. June 19, 1964 [June 20, 1963], No. 25402/64. Heading F4B. [Also in Division F2] The description and the drawings disclose substantially the same subject matter as that of Specification 1,067,326 but the claims specifically relate to the construction of the gas-tight sealing means for the gas-impermeable sleeve.
Patent GB-297824-A (GB)
Title: Improvements in or relating to electrically driven hoists
IPC: B66D3/22
Filed: 1928-09-05
Abstract: 297,824. Stahl, H. Sept. 29, 1927, [Convention date]. Geared motor-driven pulley-hoists; drum or barrel winding-machines; brakes; driving-gear.- In an electrically driven hoist the drum f is driven at normal speeds by a motor a and at lower speeds by an auxiliary motor o. The motor a is housed within the drum and drives it through the gears b, c, d and a ring a of internal teeth e. A disc h on the end of the motor shaft is formed with a ring of internal teeth i which mesh with a pinion k rigidly connected with a gear m. The gears k, m are mounted on a drum s which can be prevented from rotating by a brake r. The gear m meshes with a pinion n on the shaft of the auxiliary motor o. The drum s carried brake mechanism q for a brake disc p. The brake r is taken off when the drum is driven by the motor a.
Patent GB-718609-A (GB)
Title: Knife-guide for the cutting-mechanism of mowing-machines
IPC: A01D34/16
Filed: 1951-10-31
Abstract: 718,609. Mowing-machines. EISENWERK MILSPE GES. Oct. 31, 1951 [Sept. 28, 1949], No. 25451/51. Class 6 (3) In a mowing-machine having an upper knife blade 4 reciprocable over a lower fixed blade 3, a guide plate 7 for the blade 4 and guides 8, 9 co-operating therewith are so constructed that the rearward thrust of the material being cut tends to press the blade 4 into contact with the blade 3. The angle of contact between the rear guide 8 and the plate 7 is greater than that between the front guide 9 and the plate. The plate 7 and guides 8, 9 are replaceable to enable the pressure between the knife blades to be adjusted.
Patent GB-1114478-A (GB)
Title: Jet propulsion nozzle having a central bulbous body
Inventor: BONNEAUD HENRI AUGUSTE
IPC: F02K1/09
Filed: 1966-06-08
Abstract: 1,114,478. Aircraft jet engine thrust reversal. SOCIETE NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. 8 June, 1966 [9 June, 1965], No. 25614/66. Heading B7G. [Also in Division F1] A variable convergent-divergent jet-propulsion nozzle (see Division F1) has associated therewith a thrust reversing device comprising two diametrically oppositely disposed outlet ducts o in which are sets of reversing vanes f, the ducts being closable at g, h. When thrust reversal is selected the vanes c which are provided to vary the throat area of the nozzle are moved to completely close the nozzle as shown at the lower part of Fig. 1.
Patent GB-301151-A (GB)
Title: Improvements relating to windscreen wipers
IPC: B60S1/16
Filed: 1927-09-29
Abstract: 301,151. Powell & Hanmer, Ltd., Harris & Sheldon, Ltd., and Daniel, W. J. Sept. 29, 1927. Windows and the like, cleaning.-An electric windscreen wiper having a slipping clutch comprising a pin 9, Fig. 2, on a rocker shaft 1 engaging a recess in a disc 5 operating a wiper 2, is characterized in that the clutch is separate from the gear wheels (not shown) operating the mechanism. The disc 5 has a peripheral flange for retaining the pin 9 in place, and the two members are forced into contact by a spring 12. A spring 6 keeps the wiper arm 2 pressed to the screen, and the arm is also connected to the rocker shaft by a resilient strip 7. Operation of the wiper by hand forces the disc 5 out of connection with the pin 9. In a modification, Fig. 6, the slipping clutch device is interposed between the rocker shaft 1 and a crank 14 of the oscillating mechanism. The crank 14 has its inner end formed with a flanged boss 24 having radial recesses 26 engageable by a pin 9 on the shaft 1.
Patent GB-870269-A (GB)
Title: Storage tank for liquefied gas
Inventor: RAE RANDOLPH SAMUEL
IPC: F17C3/10
Filed: 1957-08-14
Abstract: 870,269. Storing liquefied gases. GARRETT CORPORATION. Aug. 14, 1957 No. 25721/57. Class 8(2). A storage tank for low temperature liquids comprises inner and outer shells spaced apart to form a cooling passage therebetween, an inlet passage to the inner shell for passage of liquid into the inner shell, means for removing liquid from the inner shell, means for recirculating the gases evaporating from the liquid in the passage between the shells, and means for cooling the recirculated gases. In Fig. 4 the tank comprises inner and outer shells 17, 18 spaced apart by struts and the inner shell is provided with baffles 28, 29 containing apertures to reduce movement of liquid within the tank but to allow some movement. A cylindrical housing 33 contains an electrically operated pump which, when in use, changes the liquid, e.g. hydrogen, in the tank to gas during its passage through the pump and passes it through a heat exchanger unit 38 to the point of use. Gas evaporating from the inner tank passes through an outlet 69 to the space between the tanks and thence through pipe 65 to the heat exchanger unit where it is blown by a fan past tubes containing gas drawn off from the tank ; the gas is thus cooled and then returned through pipe 68 to the space between the tanks. When gas is not being withdrawn from the tank a separate supply of coolant, e.g. liquid hydrogen, may be supplied to heat exchange unit 38 through valves 41 and 56. The tank is provided with an inlet tube 24, normally closed by a cap, through which it may be filled with liquid. The construction may be modified so that the tank may be incorporated as an integral part of the fuselage of an aircraft, Figs. 7-10 (not shown). In another arrangement, Fig. 13, the tanks are provided with bulges so that the upper end of tube 115 is always above the liquid level. Tube 115 conducts evaporated gas to a disbursing plate 116 between the two tanks whence it passes round the space between the tanks and exhausts to atmosphere. The pump 109 feeds gas direct to the point of use. Specification 870,271 is referred to.
Patent GB-1328412-A (GB)
Title: Colour television camera
IPC: H01J31/26
Filed: 1971-04-19
Abstract: 1328412 Colour television camera SONY CORP 19 April 1971 [4 April 1970] 25727/71 Addition to 1328411 Heading H4F [Also in Division H1] A colour television camera comprises a single image pickup tube having an array of strip electrode pairs 20A, 20B, Fig. 2A, (or 20<SP>1</SP>A, 20<SP>1</SP>B, Fig. 6) adjacent to a photoconductive layer 19 (or a semi-conductor target in the form of a diode array 42, Fig. 6), the object to be televised being focused via a striped colour filter which either forms part of the tubes face plate (24, Fig. 2A) or is associated with an array of lenticular lenses formed on the tube's face plate. Each pair of electrodes is associated with a red, green, blue triad of filter strips in the colour filter 24. In use alternating voltages (from source 26, Fig. 1) of opposite phase and having a frequency equal to half the horizontal scanning frequency are applied to each electrode of each electrode pair, so that the resulting composite output signal derived from the transparent signal electrode 22, Fig. 2A (or 22<SP>1</SP>, Fig. 6) includes a colour indexing signal whose phase reverses at line frequency. The composite output signal from the camera tube is amplified 28, Fig. 1, shaped and gamma connected 32 and applied to a low-pass filter 33 from which the luminance signal component is derived and to a bandpass filter 34 which passes the chrominance component and the colour indexing signal component, these latter two components being separated by delaying the filter output by one (or three or five) scanning line period and adding 36 and subtracting 37 the undelayed filter output. The indexing signal is shaped 38 and its phase, which reverses at line frequency, is corrected by means of an inverter 40 and a switch 39. This indexing signal is then used to demodulate the chrominance component signal to obtain the three video signals. Alternately the indexing signal may be replaced by a colour subcarrier so that an NTSC type signal is derived directly. The insulating layers 21, Fig. 2A, and 46, Fig. 6, may be omitted, the electrode pairs being spaced from the scanned target.
Patent GB-618498-A (GB)
Title: Improvements in or relating to means for effecting fine adjustments in mechanical devices
IPC: F02M41/08
Filed: 1944-12-22
Abstract: 618,498. Locking nuts. BENDIX AVIATION CORPORATION. Dec. 22, 1944, No. 25761. Convention date, Aug. 5, 1943. [Class 89 (i)] [Also in Group XXVIII] In a device for effecting and maintaining fine adjustment of the relative positions of adjacent co-operating parts of a mechanical assembly, and of the kind comprising a pair of relatively movable members and a resilient locking element, such as a pin, engaging one of a plurality of equally spaced notches or slots, the latter extend axially through a flange on the one member and the pin engages a notch or slot extending axially through a flange in the other member. As shown the device comprises an externally threaded sleeve 38, Fig. 2, mounted on a fuel injection pump plunger to control fluid flow therefrom (see Group XXVIII) and having a flange 40 'provided with seven axially extending notches 42, Fig. 3, and an internally threaded sleeve 44 secured at 50 to form a flange-like wall 51 having six axially extending notches 52. The pin is formed by one end of a bent portion 58 of a coil spring 54 and engages a notch 42, whilst the other curved end 60 engages a notch 52. The minimum increment of adjustment of the members 38, 44 is given by the pitch of the screw divided by the number of notches in each of the members. Specification 611,305, [Group XXVIII], is referred to.
Patent GB-318009-A (GB)
Title: Improvements in or relating to piston rings
IPC: F16J9/20
Filed: 1928-09-07
Abstract: 318,009. Andrews, E. S., (Simplex Piston Ring Co. of America, Inc.). Sept. 7, 1928. Pistons, packing. - A relatively thin ring G, having oildraining perforations J, is provided with a bevelled flange K, which increases its bearing surface on the lower side of the groove. The perforations J may be circumferential slots, rendering the ring axially compressible. The ring is preferably expanded by a corrugated spring H, which is of reduced width, in order to avoid obstruction to the flow of oil to the draining passage C, and is located by the flange K. In a modification the ring has upper and lower flanges, between which the ring H is located. Specification 318,010 is referred to.